Ewen Dai Email & Phone Number

Mountain View, Ca, Us

Berkeley, Ca, Us

Stat 88 (Probability and Mathematical Statistics in Data Science) is a connector course further developing the theoretical underpinnings explored in Foundations of Data Science (Data 8).

Berkeley, Ca, Us

Upper Division course covering modeling and decision making in data science - Data, Inference, and Decisions (data102.org)- Organize course logistics, create assignments- Host weekly office hours, lead discussion sections, and grade exams/projects

Berkeley, Ca, Us

Upper division probability class (Probability for Data Science) - Also Stat 140, Data C140 (prob140.org)- Answer questions and explain probability concepts in weekly office hours- Host weekly small group tutoring sessions focusing on content review and working through relevant exercises- Grade weekly assignments & exams

Berkeley, Ca, Us

Berkeley, Us

Berkeley, California, Us

- Advise Data Consulting PMs in terms of project logistics (timeline and reasonable workload, etc.) and suggest additional viable methods of analysis.- Review deliverables to ensure quality

Berkeley, California, Us

- Co-Project Manager- Basic Survival Analysis to predict customer retention by product purchase history

Berkeley, California, Us

- Co-Project Manager for team of 13-15 members- Analyze customer data and publicly available data to come up with a process to determine possible locations for future in-person store locations- Utilize hypothesis testing, heatmaps, and time series analysis

Berkeley, California, Us

- Exploratory Data Analysis & Data Visualization for the IPUMS Dataset (https://usa.ipums.org/usa/)- Build ARIMA Time Series Models using IPUMS Yearly Data and S&P 500 Historical Data

Berkeley, California, Us

- Data Cleaning, Data Preprocessing and Vectorization using NLP- Utilized clustering algorithms (DBSCAN and HDBSCAN) as well as engaging in hyper-parameter tuning to test for best results

Berkeley, California, Us

Berkeley, California, Us

- Implemented search function to filter club office hours calendar (JavaScript embedded in HTML)- Produced comprehensive list of major requirements and classes to facilitate redesign of Statistics Course Map

San Francisco, Ca, Us

- Build Data Marketplace data segment classification workflow, including neural network models with BERT preprocessor and encoder layers to featurize the input text (Python)- Create an ontology-based proof of concept for browsing capabilities for Data Marketplace during Hack Week

Berkeley, Ca, Us

Berkeley, Ca, Us

- Feature selection via correlation analysis and feature importance via univariate feature selection (Mutual Info Regression Score & F-Regression)- Random Forest Model Pipeline & Kernel Ridge Regression Model Pipeline- Explore utility of LSTM model

Berkeley, Ca, Us

- Explore OSM data to create features for prediction- Utilize various feature selection methods - Train and evaluate and compare models

Berkeley, Ca, Us

- Created Schema on DynamoDB for Consultant Profile- Coded ML Recommendation Engine, along with creating necessary pseudo-data

Berkeley, Ca, Us

- Answer miscellaneous questions regarding common skills in Data Science, including questions related to Python Libraries (Pandas, NumPy, Matplotlib, Seaborn), Data Visualization, Git/Github, Markdown/Latex, Logistic/Linear Regression, Classification, etc.- Host weekly Office Hours for Student Skills Development- Create Project Sample Solutions & Grade Student Homework/Lab/Project Submissions

Berkeley, California, Us

User Monitoring & Analytics Subteam Lead: Fall 2020 - May 2021- Lead team of 4 members to ensure high quality user responses and detect anomalous user activity - Improve User Reputation Score system, which indicates how closely the user's responses matches the general consensus responses, by taking into consideration more features and pre-determined "gold standard" answersMASC (Monitoring and System Calibration) Subteam Lead: Fall 2019 - Summer 2020- Lead team of 5 to 6 to ensure that the system is running accurately and analyze user behavior/responses- Estimate the number of responses needed for a general consensus (Bootstrapping)- Create User Reputation Score system that indicates how closely the user's responses matches the general consensus responsesMASC (Monitoring and System Calibration) Subteam Member: Spring 2019 - Summer 2019- Create data cleaning and analysis pipeline to analyze variance associated with each credibility indicator, from which article scores are calculated- Write functions that will create pseudo-data for testing purposes

- Create visualization function to easily gain insights from the data- Analyze the effect of COVID-19 on Tech Activism and publish article with findings (tinyurl.com/techactivism)- Implement functions that takes in an article url and returns key words and sentences to aid in data collection (Python)

- Lead team of 5-6 web officers in improving the UC Berkeley IEEE website (React, Node.js)- Update ucbstartupfair.com in support of IEEE's semesterly Start Up Career Fair- Implemented new communication system, boosting productivity from 3 projects assigned with 1 completed in Spring 2018 to 6 assigned with 5 completed (and 1 in progress) in Fall 2018, with similar results the following semesters

San Francisco, California, Us

- Add strings and regex functionality to Flux query language (GoLang)- Implement transformation functions from InfluxQL into Flux (GoLang)- Create new stream type and allow for writing data from one stream to another in pure Flux (GoLang)

Berkeley, California, Us

- Redesigned and updated Committees Page (HTML, CSS)- Supported Committee Coordinator by creating CSS Basics powerpoint and teaching 8 new committee members

Berkeley, Us

Helped host SodaHacks, VRAB's first Hackathon

Berkeley, Us

- Use Unity produce a VR horror game - Focused on animation and building background scenery

Berkeley, Ca, Us

- Publicize and host talks by successful Asian Americans- Publicize and execute fundraising events (Chick-Fil-A Fundraiser)- Publicize AAA’s first 18+ clubbing event

Palo Alto, Ca, Us

"ECYS is distinguished by its unusually large and diverse number of ensembles, a creative structure that enables ECYS teachers to offer an enriching musical education to the widest possible range of youth. The young musicians of ECYS are culturally diverse and range from those at the beginning of their musical training to those ready to establish their creative careers as performing artists."2014 - 2017: Senior SymphonySummer 2017: Tour of Central Europe (Prague, Czech Republic; Vienna, Austria; Bratislava, Slovakia; Budapest, Hungary)Summer 2015: Tour España (Seville, Granada, Valencia, Barcelona)2012 - 2014: Sinfonietta Orchestra2013 - 2014: Chamber Music Program

- Manage 6-person officer team, delegate tasks, promote teamwork- Organize annual events to promote interest in the STEM fields and plan meetings to train for the National Science Bowl Competition- Vice President: 2015-2016; General Member: 2014-2015

- Write and present weekly lectures on various topics (e.g. Classical Cryptosystems, Probability and Combinatorics)- Assist in organizing logistics for competitions and eventsPublicity: 2014-2015; General Member 2013-2014

Santa Cruz, Ca, Us

UC Santa Cruz Cluster 1 - Number Theory and Discrete MathLearned Number Theory and Discrete Mathematics, including modular arithmetic, set theory, graph theory, infinity, cryptography, and more."Designed specifically for talented and motivated high school students, the California State Summer School for Mathematics and Science (COSMOS) is a 4-week summer residential program for high school scholars with demonstrated interest and achievement in math and science."2016 Certificate of AchievementProject: The Properties of Fibonacci NumbersExploration of the properties of the Fibonacci sequence. Includes history of the Fibonacci numbers along with proofs for the relationship between Fibonacci numbers and Pascal's Triangle, consecutive ratio limit, Binet's formula, etc.

Master Of Arts - Ma, Statistics

Bachelor Of Arts, Data Science & Statistics

Education record